personally, i'd definitely return the ic to the owner or ensure tt it doesn't fall into the wrong hands - by this i mean evil ppl who use it to borrow from loan sharks.
we all see on tv how innocent ppl get harassed by ah longs (who idiotically lend $ to ppl on the basis of some others' ic.)
so if u are too lazy to return the ic to the owner, at least cut it up so tt it won't be misused. suay lor, wht to do ? i'd rather pay $100 than to face harassment from loan sharks anyday.
my own views here only pls
p.s. of cos the $300 gets re-circulated among the economy lah